Photoluminescence excitation study of cobalt-related optical centers in high-pressure high-temperature diamond

The results of a photoluminescence excitation (PLE) study of cobalt–nitrogen optical centers in high-pressure high-temperature (HPHT) treated synthetic diamonds are presented. A single vibronic band with zero-phonon line (ZPL) at 3.085 eV was found in the PLE for the 2.367 eV system and two bands wi...

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Bibliographic Details
Published in:Diamond and related materials 2001, Vol.10 (1), p.59-62
Main Authors: Kupriyanov, I.N., Gusev, V.A., Pal'yanov, Yu.N., Borzdov, Yu.M., Sokol, A.G.
Format: Article
Language:English
Subjects:
High pressure/high temperature
Impurities
Photoluminescence
Synthetic diamond
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Summary:The results of a photoluminescence excitation (PLE) study of cobalt–nitrogen optical centers in high-pressure high-temperature (HPHT) treated synthetic diamonds are presented. A single vibronic band with zero-phonon line (ZPL) at 3.085 eV was found in the PLE for the 2.367 eV system and two bands with ZPLs at 3.004 and 3.673 eV for the 2.277 eV system. From the continuum excitation threshold the ground state was tentatively located at 4.3 and 4.45 eV below the conduction band for the 2.277 and 2.367 eV systems, respectively. For the minor photoluminescence bands with ZPLs at 2.207 and 2.135 eV general features of the PLE spectra were established.
ISSN:0925-9635
1879-0062
DOI:10.1016/S0925-9635(00)00404-0